LCE8.0A-E3/73 Equivalent & Substitute Parts

Part Overview

The LCE8.0A-E3/73 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage protection applications, featuring an 8V reverse standoff voltage and 13.6V maximum clamping voltage at peak pulse current. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement.

Substiute Parts

LCE8.0A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 1211LCE8.0A-E3/73 Datasheet

Current PartRFQ

LCE8.0A

LittelfuseIn Stock: 1165LCE8.0A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LCE8.0A-E3/73 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 8V (nominal)
• Voltage - Clamping (Max) @ Ipp: 13.6V
• Current - Peak Pulse (10/1000µs): 100A
• Power - Peak Pulse: 1500W
• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, Axial
• Type: Unidirectional Zener

The LCE8.0A from Littelfuse meets all electrical and mechanical substitution criteria. Both parts share identical voltage ratings, peak pulse current handling, power dissipation capability, and physical packaging specifications. The primary difference is product status: the original part is obsolete while the substitute remains active.

Parameter Comparison

Engineering Selection Recommendations

The LCE8.0A from Littelfuse is a direct functional equivalent for the obsolete LCE8.0A-E3/73. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part maintains active product status, ensuring long-term availability and supply chain continuity.

The operating temperature range of the Littelfuse part (-55°C ~ 175°C) is narrower at the lower bound compared to the Vishay original (-65°C ~ 175°C). This difference should be evaluated against specific application requirements. If operation below -55°C is required, the original Vishay specification must be maintained or alternative parts with extended low-temperature ratings must be sourced.

All other electrical and mechanical parameters are identical, confirming direct substitution capability for applications within the Littelfuse operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the LCE8.0A replace the LCE8.0A-E3/73 in all applications?

A: The LCE8.0A is electrically and mechanically equivalent for applications operating between -55°C and 175°C. If your application requires operation below -55°C, the original Vishay part specification must be maintained.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching voltage ratings (8V reverse standoff, 13.6V clamping), peak pulse current (100A), power dissipation (1500W), mounting type (through hole), and package configuration (DO-201AA/DO-27 axial).

Q: Are there packaging differences between these parts?

A: Both parts use identical through-hole axial packaging (DO-201AA, DO-27). The Littelfuse part is supplied in Tape & Reel format, while the Vishay original used standard packaging. Physical dimensions and pin compatibility remain unchanged.

Q: Do both parts meet current compliance standards?

A: Yes. Both the LCE8.0A-E3/73 and LCE8.0A are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Q: Why is the original part listed as obsolete?

A: The LCE8.0A-E3/73 is obsolete due to manufacturer discontinuation. The Littelfuse LCE8.0A remains in active production, providing continued availability for this voltage and current rating class.